It is no secret that all branches of the United States military have been keeping a close eye on 3D printing technology. With the variety of uses across all industries, 3D printing has proven its versatility. Besides the ongoing research in a number of directions, such as 3D printing of replacement bones, battle armor, and vehicle parts, the Navy has already successfully tested ballistic missiles containing 3D printed components.
According to Business Insider, new interest is being shown in the field recently, as many patents on the original technology are expiring, thereby allowing for competition that will result in better quality products at a much lower cost. The first major patents expired in 2009 allowing new printers capable of using metal, wood, and fabric to become more available.